Double-shuttle loom for weaving pile fabrics



Feb. 17, 1931. R. w. KNOWLTON ET AL 1,793,324

DOUBLE SHUTTLE LOOM FOR WEAVING FILE FABRICS Filed Jan. 27, 1928 5 Sheets-Sheet 1 l avlltllll A L at 8 .5 7 u 3, lam" Y Inventors 1931- R. w. KNOWLTON ET AL 1,793,324

DOUBLE SHUTTLE LOOM FOR WEAVING FILE FABRICS I Filed Jan. 27, 1928 5 Sheets-Sheet 2 Inveniors a M; i]

' fiffofnel/ 1931. R. w. KNOWLTON ET AL 7 1,793,324

I DOUBLE SHUTTLE LOOM FOR WEAVING PILE FABRICS Filed Jan; 2?, 1.928 5 Sheets-Sheet s Feb. 17, 1931.

R. w. KNOWLTON ET AL 24 DOUBLE SHUTTLE LOOM FOR WEAVING FILE FABRICS Filed Jan. 27., 9 8 1 5 Sheets-Sheet '4 Feb. 17, 1931. R. w. KNOWLTON ET AL 1,793,324

DOUBLE SHUTTLE LOOM FOR WEAVING PILE FABRICS Invenlors 15 m/ywl Wanrvez Patented Feb. 17, 1931 UNITED STATES PATENT OFFICE.

RALPH w. KNOWLTON AND HAROLD c. BENNETT, OF WESTBROOK, MAINE, ASSIGNORS,

BY MESNE ASSIGNMENTS, TO SANFORD TION OF MAINE MILLS, OF SANFORD, MAIN'E, CORPORA- DOUBLE-SHUTTLE LOOM FOR WEAVING PILE' FABRICS Application filed January 27, 1928. Serial No. 249,905.

The invention relates to improvements in double looms for weaving pile fabrics, 1n which two simultaneously operating shut- 5 tles are employed.

The principal object of the present invention is to provide through the use of supplemental mechanism in substitution for certain elements in the structure of the conven- 1 tional type of two-shuttle or double loom, means to eliminate the interruption in.the operation thereof occasioned by stoppage of the loom for the purpose of replacing an empty shuttle with a fully stocked shuttle, and

thereby render the operation of the double loom continuous.

In two-shuttle weaving in double looms, the curtailment in production due to these periodical shut-downs is of more than casual o consequence, and it is an object of the invention to materially aid in reducing manufacturing costs by saving time through continuous operation of the double loom.

Another object of the invention is to equip 5 the double loom with a shuttle assembly located on one side of the loom opposite the ordinary tW0-sh11ttle-b0x assembly and containing three shuttle boxes, affording an auxiliary shuttle box and shiftable upwardly and downwardly to en'ablea fully stocked shuttle to be substituted for an empty shuttle.

A further object of the invention is to provide means for the introduction of a spare restocked shuttle into the lowest shuttle box of the three-box assembly, and for raising the shuttle assembly and carrying the lowest shuttle box into horizontal alignment with the lower shuttle box of the two-box assembly, and for simultaneously shifting apar- 4 tially filled shuttle to a position in alignment with the upper shuttle box of the two-box as sembly and the displaced empty shuttle to a position above the sheds to enable it to be readily removed.

It is also an object of the invention to provide synchronization of movement of the novel mechanism employed to introduce the re-stocked shuttle into operative position with the movements of the regular actuating elements of the double loom.

A further object of the invention is to protect the actuating parts of the three shuttle box assembly by automatically operating safety latch mechanism adapted to prevent clashing or interference of parts through careless handling of the control mechanism on the part of the loom tender.

Another object of the invention is to make the whole apparatus function in operation as nearly automatically as is practical with the manual control of the apparatus and the manual feed of the fully stocked shuttles to the loom, and the manual removal of the empty shuttles from the apparatus.

With these and other objects in view, the invention consists in the construction and novel arrangement of parts hereinafter described, illustrated in the accompanying drawings, in which like characters designate like parts, and set forth in the claims hereto appended, it being understood that various changes in the form, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit of the invention or sacrificing any of the claims thereof.

In the drawings,

Figure 1 is a side elevation of a portion of a double shuttle loom provided with an apparatus .constructed in accordance with the present invention.

' Fig. 2 is a perspective view of the shuttle projecting mechanism.

Figs. 3, 4, 5, 6 and 7 are diagrammatic views illustrating the shuttles in connection with and in relation to the shuttle box as semblies.

Fig. 8 is a plan view of the three-shuttle- 7 boxassembly.

Fig. 9 is an end view, partly in section, illustrating the three-shuttle-box assembly and showing the covering for the top box in closed position.

Fig. 10 is a simliar view, the shuttle box slide being in elevated position and the covering being open.

Fig. 11 is a plan view of the crank mechanism for actuating the shuttle projecting parts.

Fig. 12 is a plan view of the shuttle box lifting mechanism.

F ig. 13 is a diagrammatic side view of the same, showing one of the driven gears in mesh with the segmental gear.

Fig. 14 is an elevation, partly in section, of the three shuttle box assembly, illustrating the safety slide and the means for operating the same.

Figs. 15 and 16 are detail sectional views of 'the'safety non-jamming device forming a part of the standard of the shuttle box slide.

Fig. 17 is a side elevation of the safety latch which prevents actuation of the shuttle box slide, in its elevated position.

Figs. 18 and 19 are detail views of the shuttle box lifting arm.

Before proceeding with a detailed description of the structural features of the apparatus, a clearer understanding of the general object of the invention may be had by referring to Figs. 3, 4, 5, 6 and T of the drawings. I

In Fig. 3 is illustrated a simple diagram illustrating the arrangement of the two shuttle-box assemblies. the one illustrated at the right hand side of the said figure' being the ordinary two-shuttle-box assembly, and the other at the left hand side of the figure being a three-shuttle-box assembly, the former being a partof the ordinary structure of a double loom and the latter constituting a portion of the subject matter of the present invention. The right hand shuttle box assembly is designated by the reference character A and the novel three-shuttle-box assembly is designated by the reference character B. In assembly B the three shuttle boxes are indicated by the letters a, b, and c, and those in assembly A by the letters 03 and e.

In assembly B is illustrated the projection of two shuttles 1 and 2, the shuttle 1 being empty and the shuttle 2 being a partially stocked shuttle.

In Fig. 40f the drawings there is illustrated in assembly A a partially stocked shuttle in shuttle box e and an empty shuttle in shuttle box (Z. In this figure assembly B has a spare re-stocked shuttle in shuttle box 0, which is the lowest box, and the one into which the spare l e-stocked shuttle is projected automatically by the means. hereinafter described. hat is accomplished by the present invention is the bringing 'of the shuttle 3 into action in the loom without stopping the weaving operation. The first step in this operation of bringing the shuttle 3 into action in the loom is to pass the shuttles 1 and 2 from assembly A to assembly B (see Fig. 5), and when this has been done the slide on which is mounted the three box assembly B is raised to the position illustrated in Fig. 6 of the drawings. The picker sticks. which operate only in the shuttle boxes which are in alignment with the shuttle boxes (I and 6, may pass the partially filled shuttle 2 and At this stage the shuttles 2 and 3 may pass from the boxes (Z and e to the boxes a and b respectively, and vice versa, the arrangement of the boxes being then as indicated in Fig. 7, with the bottom shuttle box 0 of assembly B empty and ready to receive another shuttle with a fully stocked bobbin therein. This outlines the sequence of operations which it is necessary to perform to place in the loom a fully stocked shuttle as a substitute for an empty shuttle, which is displaced.

Coming now to a detailed description of the parts employed to effect these operations, and referring to Fig. 1 of the drawings, 4: designates a portion of the lay structure of the loom, to which is secured two superframes 5 and a sub-frame 6, and these elements support the several parts comprising the assembly B. On the forward end of the sub-frame 6 issecured a spare shuttle box 7 adjacent to which is the picker stick housing 8. It will be understood that the picker stick and its connecting parts are identical in both assemblies, A and B, and that these elements are constructed in accordance with the ordinary practice. The picker heads 9 are guided on rods 10, and within slots 11 the picker stick 12 operates.

Referring particularly to Figs. 8, 9 and 10, the super-frames 5 are provided with opposite channels 13 forming guides in which reciprocates a shuttle box slide-14. The shuttle box slide 14 comprises in its construction vertical end portions, a base portion 15 and two horizontal partitions 16. A cover 17 for the top box a is pivotally hung on ears 18 on the slide. These four members, the base 15. the two horizontal partitions 16, and the cover 17. partially enclose three spaces which constitute the three shuttle boxes a, b. and c. in assembly B. Each of the shuttle boxes is provided with the conventional type of shuttle binder 19 and spring 20.

The spare shuttle box 7, which is open at the top, has a floor 21 on which the spare shuttle 3 may temporarily rest or remain until required in the loom. The mechanism for projecting the shuttle 3 into the empty shuttle box 0 at the bottom of the assembly B comprises in its construction a crank 23 pivotally versely of the assembly B, and fixed to the rod 27 is a crank 28 which is connected by a suitable pivot 29 with the outer end of the connecting bar 25. Operating beneath the spare shuttle box 7 and intermediate of the ends thereof, is a shuttle projector 30 extendlng 1 through a cut-out portion of the base or floor 21 of the spare shuttle box 7 and mounted on and carried by a framework of parallel bars 31, which are fixedly mounted at their lower ends on the rods 26 and 27, as clearly illustrated in Fig. 2 of the drawings. The upper ends of the parallel bars 31 are pivotally connectd to the shuttle projector 30, which maintains the bars 31 in parallelism. The outward swinging of the crank 23 through the connecting bar 25 moves the shuttle projector 30 inwardly from the full line position illustrated in Fig. 9 of the drawings to the dot and dash line position shown in the said figure, and this movement forces the shuttle 3 from the spare shuttle box 7 into the bottom shuttle box 0 of the assembly B.

A bracket 33, which is mounted on the frame 32 of the loom, supports at its upper end a pawl 34 pivoted at 34 to the bracket, which is provided with a shoulder 34 for limiting the swing of the bracket in one direction, and the pawl 34 is maintained normally in'engagenient with the shoulder 34 by a coiled spring 34 connected at .one end to the pawl and at the other end to the bracket.

The shoulder 34 enables the'pawl to form a solid abutment for engaging a projecting portion of the stud pin 24 when the lay is moving forwardly or outwardly for operating the shuttle projecting mechanism, and

when the lay is moving inwardly or rearwardly the spring will permit the projecting stud 24 to pass over it without affecting the shuttle projecting mechanism. As the lay of theloom oscillates backwardly and forwardly on its pivotal point at 35, there will be no operation of the shuttle projecting mechanism when the crank 23 is in its normal inoperative position as shown in full lines in Fig. 9 of the drawings. When the crank 23 is in such normal inoperative position, the

' path of movement of the projecting stud pin 24 is above the top or upper end of the pawl 34, and no action or movement of the crank on its axis takes place. However, by lifting a crank or operating lever 36 from the full line position to the dot and dash line position shown in Fig. 9, and increasing the space between the parallel bars 31, the latter are swung inwardly and the free end of the crank and the projecting pin 24 are lowered to the dot and dash line position shown in Fig. '9, and the pawl 34 extends into the path of movement. of the projecting stud 24. If

the lowering of the crank 23 occurs when the crank is in advance of the-pawl 34, itwill rotate on its pivot 34 and permit the projecting pin to pass over the pawl 34 without operating the shuttle projecting mechanism. On the forward movement of the lay, the pawl 34 will form a solid abutment for the projecting end of the stud- 24 and as the lay advances the crank will be forced into its extreme backward position. This effects an operation of the shuttle projecting mecha-, nism, and the shuttle 3 will be carried from the spare shuttle box 7 into the shuttle box 0 of the assembly B from the position illustrated in full lines in Fig. 9 of the drawings to the positionshown in dot and dash lines in the said figure. To prevent accidental displacement of the shuttle 3 from the spare shuttle box 7 two yielding abutments 37 are provided. These abutments consists of arms located at the inner or rear side of the spare shuttle box and extending upwardly from the bottom thereof. The abutment arms 37 are pivoted at their lower ends and are maintained in an upright position to form a stop for the shuttle 3 by means of light springs 38 which offer but slight resistance to the passage of the shuttle when the same is actuated by the shuttle projector 30. There is also provided a latch member 39 which retains the shuttle in the box 0 previous to then ward movement of the shuttle box slide. This latch member 39 extends across the bottom or base 15 of the shuttle box slide and is pivoted atits inner or rear end 'at 39. The body portion of the latch member is approximately L-shaped, and the short arm of the L-shaped body portion extends upwardly at the front of the shuttle box 0 and is beveled at the upper end at the outer or front side to enable it to be readily depressed by the shuttle 3 when the same is projected from the spare shuttle box 7 into the bottom shuttle box 0. This short arm ofthe latch .projects slightly above the upper face of the base 15 for engaging the shuttle 3, as clearly illustrated in Fig. 9 of the drawing. The latch member'39 is provided 'at its inner pivoted end with a depending arm 39 to which is connected one end of a coiled spring 39, which yieldably maintains the latch member 39 in its engaging position.

As previously explained, the slide 14 is verticallymovable between the super-frames 5, and the extent of this movement is just sufficient to raise the shuttle box 0 into the position previously occupied by the shuttle box I) in the assembly B. The pivoted cover 17' is automatically operated to open and close it by the vertical movement of the slide 14. When the slide is raised, the cover is in its open position as illustrated in Fig. 10 of the drawings. The cover is provided with a ly and rearwardly from the same when the cover 17 is in its closed position, as clearly illustrated in Fig. 9 of the drawings. The outer or free end of the crank arm is 0011- nected to the upper end of a link 42 which extends downwardly from the crank arm 40 andis pivoted at its lower end to the superframe 5. The upward movement of the slide 14 effects a downward pull on the crank arm 40 of the shaft 41-, and the cover is swung to the open position illustrated in Fig. 10 of the drawings to permit the ready removal of the empty shuttle. Simultaneously with this operation. a fully stocked shuttle, which has been previously placed in the bottom box 0 of the shuttle slide, is also carried upwardly by the slide 14 and introduced into the loom. The downward movement of the slide 14 effects a relatively upward swinging movement of the crank arm 40 and moves the cover 17 to its closed position and carries.

cam or engaging portion 36 which bears against the parallel bar 31 companion to the parallel bar 31 on which the operating lever is fulcrumed. The swinging of the handle portion 36 from the full line position illustrated in Fig. 9 of the drawings to the dot and dash line position shown in the said figure, carries the upper or actuating arm 36 rearwardly and separates the parallel bars 31 and effects an upward movement of the shuttle projector 30. This movement of the shuttle projector raises the same from the position shown in full lines in Fig. 9 to the dot and dash line position where the shuttle projector is in position to engage and actuate the shuttle 3 for moving the same from the spare shuttle box 7 into the bottom shuttle box 0 of the vertically movable slide.

Let it be assumed that the slide has been raised and that a spare fully stocked shuttle has been placed in the shuttle box. It will be obvious that, with no provision made to meet this condition, the operator could by an upward lift of the crank or operating lever 36. force this spare shuttle into the space below the box 0 or below the base 15 of the assembly, and then on loweringthe slidewould cause a breakage, or at least a jamming, of the parts. To prevent this from occurring. a safety mechanism is provided. This safety mechanism comprises a double arm lever 43 pivotally mounted on the subframe by a suitable pin 44 and having upper and lower arms. The lower arm portion 43 of the lever is normally, or when the slide is in the down position, held out of the path of movement of the projecting stud pin 24 by impingement of a stud 45 fixed in the slide and arranged to engage the upwardly extending arm or portion 43 of the lever 43. \Vhen, however, the slide 14 is raised to its up position, the lever 43 is permitted to swing in behind the stud pin 24 to the dot and dash line position illustrated in Fig. 17 of the drawings. The operating lever 36 can not be lifted after the arm 43' has locked the projectingpin 24 against backward and downward movement, which might cause it to engage the pawl 34 and actuate the shuttle projector. A spring 43 is connected with the lever 43 for automatically moving the same to its engaging position when the slide is elevated, but the lever may be made gravity acting, or any other suitable means may be employed for automatically moving the said lever 43 to its locking position. lVhen the slide 14 is lowered, the upwardly extending 'arm of the lever 43 is engaged-by the stud 45 and the lever will be oscillated to move its engaging arm out of the path of the projecting pin 24.

Referring to Figs. 1, 12 and 13, in which is illustrated the means for raising and lowering the slide 14, 47 designates the main drive shaft of the loom. on which is fixed the main drive gear 48. Secured also to the shaft 47 is the segmental gear 49 having on its inner side an arcuately flanged member 50. Disposed transversely of the frame 32 is a shaft 51 on which is pivotally journaled a. substantially triangular frame 52. On shafts 53 and 54, revoluble in hearings in the frame,'are gears 55 and 56, respectively, which are located at opposite ends of the segmental gear 49, so that oscillations of the triangular frame in opposite directions will cause the said gears 55 and 56 to move into and out of engagement with the segmental gear. \Vhen the triangular frame is shifted in one direction one of the said gears and 56 is brought into positign to mesh with the segmental gear and when the triangular frame is moved in the opposite direction, the other of the said gears 55 and 56 may be brought into position to mesh with the segmental gear. The triangular frame is adapted, as illustrated in Fig. 1 of the drawings, to be arranged in a neutral position with both ofthe gears 55 and 56 out of mesh with the segmental gear.

Located outwardly from and adjacent the frame 52 is sprocket chain 57 trained over sprocket wheels 58, 59 and 60, which are fixed on the shafts 51, 53 and 61, respectively. Mounted on the shafts 54 and 61 and arranged outwardly beyond the sprocket chain, are intermeshing gears 62 and 63.- A crank 64 is secured to the shaft 51 and is provided with a crank pin 65 which is connected with an off-set portion of a forked arm 66. The

forked arm is arranged vertically and extends downward from the crank 64 and is pivoted at its lower end at 67 to a beam 68 fulcrumed intermediate of its ends on a beam 69, which is connected at its opposite end to the lower end of a standard 71. The standard 71 extends upwardly from the beam and is secured to the base 15 of the vertically movable slide. just described is to raise and lower the shuttle box slide 14, and this vertical movement of the latter must be made at the proper time and in synehronism with the actuating elements which control the operations of the lay and picker sticks. This is accomplished by loeating the segmental gear properly on the main drive shaft, so that it times correctly with the other actuating elements. The segmental gear is of the proper size to impart just the right amount of movement to the co-acting and inter-connecting parts. The standard 71 may be provided with a double acting compressible member 72 to enable the standard 71 to yield to any resistance to the movement of the slide 14, and the threaded connection shown enables the member 72 to serve the purpose of a turnbuckle to adjust the standard to the proper length.

The slide actuating gearing is thrown into and out of operation by means of a hand lever 72 pivoted intermediate its ends at 73 to a bearing bracket and extending above and below the said bracket and provided at its upper end with a suitable grip or handle. The lower hand lever is connected by a rod 74 with one arm of a bell crank lever 75 fulcrumed at its angle in a suitable bearing bracket and having its other arm connected by a rod 76 with the frame 52. The rod 76 extends downwardly from the bell crank lever and is connected by a suitable pivot 77 to the frame 52. When the hand lever 72' is thrown to the right of the position shown in Fig. 1, the gear 56 will be carried into position to mesh with the segmental gear 49 when the latter has revolved sutficiently to bring its gear teeth to the said gear 56. The gear 56 is held in mesh with the segmental gear by a pin 80 mounted on the frame 52and arranged to engage with an outwardly extending arcuate flange of the member 50. The

flange of the member 50 is located adjacent to and parallel with the teeth of the segmental gear, and in practice the operator holds the operating lever until the projecting pin 80 engages with the curved flange of the member 50. This movement of the frame 52 from the position illustrated in Fig. 1 of the draw.- ings causes a spring 78 to be distended and placed under tension, and the spring 79 to be retracted. The springs 78 and 79 are located above and below the rod 76, the upper spring 78 being connected to one 'of the arms of the bell crank lever 75 and the other being connected with the frame 52 The function of the mechanismand the rod 76 at the pivot 77. As the pin 80 engages with the inner face of the arcuate flange of the member 50, the oper ator releases his hold on the lever 72' and .49 and 56, and from these the direction of movement of the other gears and the sprocket chain may be ascertained. For instance, in

Fig. 13 of the drawings, the gear 56 is shown.

in mesh with the gear 49 and is rotated counter-clockwise, but owing to the interposition of the gears 62 and 63 this direction is reversed in the sprocket chain to a clockwise movement, rotating the shaft 51 in the same direction and moving the lifting arm upwardly and raising the adjacent end of the beam 68 and consequently lowering the shuttle box slide 14. Conversely, if the lever 72 is thrown to the left from the position illus trated in Fig. 1 of the drawings, the lifting arm will be lowered and the slide 14 raised.

The arcuate length of the segmental gear 49 is such as to give circular movement to the gears 55 and 56 sufficient to bring'the crank pin to at least the central vertical line through the shaft 51, or, in other words,'to a dead' center line, either above or below the shaft, which looks the apparatus and prevents vertical movement of the slide 14 when both the gears 55 and 56 are in neutral position. It will be understood that when the gear 55' engages the'gear 49 another pin 81 similar to the pin 80 engages the inner face of the arcuate flange of the member 50 and locks the gear 55 in mesh with the segmental ear.

In Fig. 14 another safety appliance is illustrated. Whenthe slide 14 is in its raised position, and the cover 17 open, and an empty shuttle in the top box a-of the assembly B, and the'operator about to remove the empty shuttle, he may accidentally tilt the outer end of the erpty shuttle sufliciently to cause it to come in contact with the picker stick or picker head, and cause trouble. The appliance comprises in its construction a sliding plate 82 mounted in suitable slide-ways 83 and provided near its outer end with an opening 84 through'which extends one arm of an L-shaped lever 85. The lever 85 is pivoted at one end on a pin 86 and is actuated by means of a link 87 which is pivoted at its upper end, at 88, to the slide 14, and at its lower end to the lever 85, at 89. The link 87 is slotted at its upper end at the pivot 88 to allow for overtravel of the slide 14. A coiled spring 89 is connected with the link 87 for urging thesame downwardly. The spring 89 is connected at its upper end with the link and at its lower end with the subframe 6. A narrow flat spring 90 may serve conveniently to hold the loose end of the thread from the bobbin while the shuttle is being projected into operative position in the loom. i

In operation, the loom tender, observing that the bobbin the upper of the two operatmg shuttles is very nearly exhausted of weaving material, moves the operating lever upwardly, and this automatically causes the spare shuttle 3 to be projected into the shut t-le box 0. The hand lever 72' is now moved to the left of the position shown in Fig. 1, and the slide 14 will be elevated to the position illustrated in Fig. 10. The empty shuttle may now be removed, although it is not necessary that it be done the instant the slide 14 is raised, as the loom is operable with the full shuttle and a partially filled shuttle passing in and out of the boxes. The empty shuttle must, however, be removed from the top box before the slide is lowered. To lower the slide, the hand lever 7'2 is moved to the right 'from the position shown in Fig. 1. After placing another full shuttle in the spare shuttlebox 7, the foregoing operations are repeated to place another shuttle in working order in the 100m. At the start of operations the shuttle 1 is only partially filled with weaving material, so that the top one of the two shuttles is always the first to be replaced.

What is claimed is 1. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the loom and designed to cooperate with a two box assembly located at the opposite side of the loom,

said three box assembly providing an auxiliary shuttle box. means for raising and lowering the three box assembly to arrange one of the shuttle boxes alternately at the top and bottom beyond the path of the shuttles. to permit the removal of an empty shuttle and the introduction of a filled shuttle at spaced points, whereby said three-box assembly will be enabled by the addition of a single box to present a separate box to both the full shuttle and the empty shuttle. and means for introducing a filled shuttle into the auxiliary shuttle box when the three box assembly is in one of said positions.

2. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the loom and designed to cooperate with a two box assembly located at theopposite side of the loom, said three box assembly providing an auxiliary shuttle box, means for raisin g'and lowering the three box assembly to arrange one of the shuttle boxes alternately at the top and bottom beyond the path of the shuttles, manually controlled means for introducing a filled shuttle into the auxiliary shuttle box when the same is at the bottom of the assembly, and means automatically operable for locking the said manually controlled means a ainst movement when the three box assem ly is in its raised position.

3. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the loom and designed to cooperate with a two box assembly located at the opposite side of the loom, said three box assembly providing an auxiliary shuttle box, means for raising and lowering the three box assembly to arrange one of the shuttle boxes alternately at the to and bottom beyond the path of the shutt e's", manually controlled means for introducing a filled shuttle into the auxiliary shuttle box when the same is at the bottom of the assembly, means automatically operable for locking the said manually controlled means against movement when the three box assem ly is in its raised postion, and means carried by the three box assembly for engaging the automatic means to release the manually controlled means when the three box assembly is in its lowered position.

4. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and designed to cooperate with a two box assembly located at the opposite side of the lay,said three box assembly providing an auxiliary shuttle box, means for raising and lowering the three box assembly to arrange one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles, a spare shuttle box located at the front of the loom, a relatively fixed abutment, and mechanism carried by the lay of the loom and adapted to engage with the abutment and be actuated by the movement of the lay to project a shuttle from the spare shuttle box into the auxiliary shuttle box of the as sembly.

5. In a double shuttle loom for weaving.

pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and designed to cooperate with a two box assembly located at the opposite side of the lay, said three box assembly providing an auxiliary shuttle box, means for raising and lowerin the three box assembly to arrange one of tfie shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles, a spare shuttle box located at the front of the loom, a relatively fixed abutment, and mechanism carried by the lay of the loom and adapted to engage with the abutment and be actuated by the movement of the lay to project a shuttle from the spare shuttle box into the auxiliary shuttle box of the as sembly, said abutment having a pivoted engaging portion arranged to permit the shuttle projecting mechanism to pass over it without operation when the lay is moving in one 4 direction.

pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and designed to cooperate with a two box assembly located at the opposite side of the lay, said three box assembly providing an auxiliary shuttle box, means for raising and v the assembly, said abutment having a pivoted engaging portion arranged to permit the shuttle projecting mechanism to pass over it without operation when the lay is moving in one direction, and manually operable means for moving the shuttle propelling mechanism to a position where the abutment will lie in the path of movement of the propelling mecha-e nism.

7. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and designed to cooperate with a two box assembly located at the opposite side of the lay, said three box assembly providing an auxiliary shuttle box, means for raising and lowering the three box assembly to arrange one of the shuttle boxes alternately at the top .and bottom of the assembly beyond the path of the shuttle, a spare shuttle box located at the front of the loom, a relatively fixed abutment, and mechanism carried by the lay of the loom and adapted to engage with the abutment and be actuated by the movement of the lay-to project a shuttle from the spare shuttle box into the auxiliary shut tle box of the assembly, the auxiliary shuttle box being open at the front and the spare shuttle box being open at the back,a pivoted latch arranged at the bottom of the assembly to retain the shuttle therein, and yieldable fingers arranged at the back of the spare shuttle box to hold the shuttle in position for engagement by the propelling mechanism.

8., In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and designed to cooperate with a two box assembly located at the ppposite side of the lay, said three box assembly providing an auxiliary shuttle box, means forraising and lowering the three box assembly to arrange one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttle. means-for introducing a full shuttle into the auxiliary shuttle box when the latter is at the bottom of the assembly, a hinged cover for the top shuttle box of the three box assembly, and means connected with the cover and the lay and operated by the vertical movement of the assembly for opening the cover when the three boxassembly is raised and for closing the cover when the three box assembly is lowered.

9. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly at the other side of the lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles for-introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle, said means including a lever connected with the vertically movable assembly, a segmental gear rotated by the loom, a crank element connected with the lever, and gearing connected with the crank element, and movable into and out of mesh with the segmental gear to actuate the crank element to raise and lower the'three box assembly.

10. In a.double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a .two

box assembly at the other side of the lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle, said means including a lever connected with the vertically movable assembly, a segmental gear rotated by the loom, a crank element connected with the lever, and gearing connected with the crank element, and movable into and out of mesh with the segmental gear to actuate the crank element to raise and lower the three box assembly, and manually operable means for moving the gearing int-o mesh with the segmental gear.

11. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly at the otherv side of the lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and forpermitting the removal of an empty shuttle, said means including a lever connected with the vertically movable as-' ally operable means for moving the gearing into mesh with the segmental gear and a utomatically operable means for retaining the gearing in mesh with the segmental gear until the segmental gear has completed its operation.

12. In a double shuttle loom for weaving pile fabrics, the com ination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly at the other side of the. lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle. said meansincluding a lever connected with the vertically movable assembly. a segmental gear rotated by the loom, a crank element connected with the lever, and gearing connected with the crank element, and having gears located at opposite sides of the segmental gear and adapted to be carried into mesh with the same, said gearing being arranged to move the crank element in one direction when one of the said gears is in mesh with the segmental gear and in the opposite direction when the other of said gears is in mesh with the segmental gear.

13. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate witha two box assembly at the other side of the lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path ofthe shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle, said means including a lever connected with the vertically movable assembly. a segmental gear rotated by the loom, a crank element connected with the lever, and gearing connected with the crank element, and having gears located at opposite sides of the segmental gear and adapted to be carried into mesh with the same, said gearing being arranged to move the crank element in one direction when one of the said gears is in mesh with the segmental gear and in the opposite direction when the other of said gears is in mesh with the segmental gear, and an operating lever connected with the gearing for manually shifting the same to mesh either of the said gears with the segmental gear.

14. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly at the other side ofthe lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top andbottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle, said means including a lever connected with the vertically movable assembly, a segmental gear rotated by the loom, a crank element connected with the lever. and gearing connected with the crank element. and having gears located at opposite sides of the segmental gear and adapted to be carried into mesh with the same, said gearing being arranged to move the crank element in one direction when one of the said gears is in mesh with the segmental gear and in the opposite direction when the other of said gears is in mesh with the segmental gear, an operating lever connected with the gearing for manually shifting the same to mesh either of the said gears with the segmental gear, and coiled springs connected with the operating lever for holding the gearing in a neutral position.

15. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly atthe other side of the lay, means for raising and lowering the three box assembly to present one of the shuttle boxes alternately at the top and bottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle. said means including a lever connected with the vertically movable assembly, a segmental gear rotated by the loom, a crank element connected with the lever, a. pivoted frame, sprocket gearing mounted on the pivoted frame and connected with the crank element for actuating the same, spur gears carried by the pivoted frame and adapted to be carried into mesh with the segmental gear by the shifting of the pivoted frame, one of the spur gears being connected directly with the sprocket gearing and an intermediate gear connecting the other spur gear withthe sprocket gearing.

- 16. In a double shuttle loom for weaving pile fabrics, the combination of a three box assembly located at one side of the lay of the loom and adapted to cooperate with a two box assembly at the opposite side of the lay, the three box assembly being vertically movable to alternately arrange one of the shuttle boxes at the top and bottom of the assembly beyond the path of the shuttles for introducing a full shuttle into the assembly and for permitting the removal of an empty shuttle from the assembly. a slide arranged at the outer end of the bottom of the top shuttle box of the vertical assembly. and mechanism connected with the slide and with the lay and actuated by the vertical movement of the assembly to move the slide inwardly when the said'assembly is raised'and outwardly when the assembly is lowered.

17. In a double shuttle loom for weaving pile fabrics, the combination of athree-box assembly located at one side of the loom and designed to cooperate with a two-box assembly located at. the opposite side of the loom, said three-box assembly being provided with an auxiliary shuttle box, means forraising and lowering the three-box assembly to'project one of the shuttle .boxes"alternately at the top and bottom beyond'the shuttle path carry the other two shuttle boxes. of the threeto permit the introduction of a full shuttle and the removal of an empty shuttle at spaced points, whereby the said three-box assembly is enabled by the addition of a single box to present a separate boxto both the full shut! tle and the em ty shuttle, and manually controlled means or introducing a filled shuttle into the auxiliary shuttle box when the same is at the bottom of the assembly. 1

18.- The combination in a double shuttle loom for weaving pile fabric, of a two-box assembly located at one side of the loom, a three-box assembly located at the opposite side of the 100m, meansfor moving a pair of shuttles back and: forth from one. assembly tothe other; means for. raising thethree-box assembly to project the toil-shuttle box thereof beyond the path of t e' shuttles and to box assembly in line with --the shuttle boxes of thetwo-box assembly-and, for lowering the-three-box assembly to project the bottom boxthereof below the path of the shuttles and to carry-the other two shuttle boxes of the three-box assembl --in line with the shuttle boxes of the twoox assembly, andmeans for introducing a full shuttle into the projecting shuttle box of the three-box as- I sembly-when the same is'inone of the said of the said positions.

. 19 The combinationinatdouble' shtittle' position, an 'emptyshuttle bein removable" from the top shuttle box of the t rec-box assejmbly when the said top shuttle box is in 'a proje'cting' position.

20.' The combination in ado1ible shuttle 'loom forweaving pile fabric, of a two-box assembly located at one-sideof the loom, a

three-box assembly located at the opposite I side of the loom, means for moving a pair of shuttles back and forth from one assembly to the other, means for raising the three-box of beyond the path of the shuttles and to carry the other two shuttle boxes of the threebox. assembly in line with the shuttle boxes of the two-box assembly and for lowering the three-box assembly to project thebottom box thereof belowthe path of the shuttles and to assembly to project the top shuttle box there- H carry the other two shuttle boxes of the threeq box assembly inline with the shuttle boxes of the two-box assembly, means for introducing a full shuttle into the projecting shuttle box. of the three-boxassemblywhen the same is in one of the said positions, an empty shuttle being removable from the projecting shuttle box of the three-box assembly when the latter is in the other of'the said positions, and means including manually controlled mechanism for connecting the three-box as-.

sembly with the loom for raising and lowering the three-box assembly in vsynchronism with the loom.

In testimony whereof we have hereuntoset, our hands, this 23 day of January, 1928. 1

RALPH W. KNOWLTON,

positions, an empty shuttle being removable fromthe projecting shuttle box of'the threebox assembly when the latter is inthe other assembly to project thefo shuttle box theret e path of t e shuttles and .to carry the other two shuttle boxes of the threebox assembly in line with the shuttleboxes of the two-box assembly and forlo weringthe '1 three-box assembly to project the bottom box thereof below the path of the shuttles and. to carrythe other two shuttleboxesof the three-box assembly in line with the shuttle .-boxes of the t'wo-box assemb1y, a'nd means for-{introducing a full shuttle into the bottom shuttle boxof the three-box assembly when the said bottom box is in a projecting HAROLD C. BENNETT. 

